Combined dye and polish for leather



I Patented New. 2, llgyfiho i t i t.

ea rnnr WOLF KRITCHEVSKY,

ILLINOIS, ASSIGNORS nnnonn c/ rnnrsiumv, Ann

MABEL G'r. SMITH, OF CHICAGO,

T WILLIAM CITRCN, TRUSTEE, 01E CHICAGO, ILLINOIS.

COMBINED DYE AND POLISH FOB LEATHER.

lilo Drawing.

Our invention relates to a substance adapted to be applied to leather, particularly shoes, by one without previous skill or experience and which may be confined within a of a liquid is undesirable for several reasons,

and an object of our invention isto so perfect the compound that it may be sold and ,used in the form of a smooth, even-flowing paste, the dye being in solution and the wax being partly in solution and partly in suspension.

In order to secure the most advantageous results, it is necessary, or" at least desirable, to employ two solvents, one of which is a solvent for both the dye and wax, and the other a solvent for the dye only but having the function of precipitating the wax. 'The proportions of the solvents relative to the other ingredients will'be such that a product in the form of a paste results therefrom.

The reason for this is as follows: When the dye and the wax are both dissolved in the same solvent, thenrthe wax carries all the dye. When the preparation is applied to the leather the wax stays on thetop and holds the dye with it. -Whe'n there are two solvents of which one solvent contains dye and wax and the other solvent contains dye only, the wax with some dye in is dissolved in the other solvent not containing the wax will penetrate into the leather and dye it.

In carrying out the invention, we employ an aniline dye such as ni osine black, Bismarck brown, or other spirit-soluble and oil dyes of the required color, together with a material that will furnish a polish such as carnauba wax, Japan wax, bees wax, or montan wax. For a solvent that will dissolve the dye but not the wax, we may utilize commercial alcohol, cold acetone or some other similar organic liquids soluble in water. For the solvent that will dissolve both the oil and wax, we may use xylol, benzol, benzine turpentine or some liquid insoluble in water.

and is ready to be placed in the tubes.

it will remain on the surface of the leather, while the dye that .p

the pores of the similar organic in, a combine Application filed (lctober 6, 1924:. Serial Ito. 742,062.

A specific formula covering the preferred ingredients is as follows:

- I Per cent Carnauba wax 15 Paraflin wax 55 Bismarck brown 5 Xylol 35 e0 Alcohol 40 A modification may be made in which a different dye is employed as follows:

, Per cent. Carnauba wax 15 Montan wax u, ,5 Oil black 10 Turpentine 30 Acetone 40 lit will be understood that in the above formulae, the alcohol or acetone "acts as a solvent for the dye only, and serve" to precipitate a portion of the wax in Rely divided form, thus producing the th .ckened or pasty condition required.

In practice, the waxes and the dye are first melted and thereafter the specified pro- I portion of xylol is added. lhe solids enter into the solution and thereafter, while the mixture is still warm, the alcohol is added. This results in precipitating a certain quantity of the waxes, and as the substance cools, it is in the form of a smooth colloidal paste By combining the necessary ingredients with a plurality of solvents having difierent propert1es,we are able to produce a smooth aste which may be applied directly to the leather without running and which will have to the function of immediately releasing the dye and depositing it .on the leather, the solvent partly vaporizing and partly entering the leather, the major portion of the wax remaining on the surface. Sufficient dye is in solution with the solvent for the wax to color the wax, but the bulk of the dye'is but loosely held in the compound and Wlll. attach itself immediately to the leather. The wax, being partly in solution, partly in sus- 10o pension and partly'in the form of a precipitate, remains on the surface where 1t covers I leather and provides an effective polish. v a

By followin the instructions given here- 1% dye and. polish may be pre= pared in much more concentrated form than 'is possible in the case. of a liquid. Ihe subthat may be dispensed from a tube, consisting of dye in quantity suflicient to dye leather and Wax, and a plurality of solvents one of Which solvents 1s not a solvent for the wax. K

2. A combined dye and polish in the form of a smooth paste, consisting of aniline dye in quantity sufiicient to dye leather, Wax, a solvent that will dissolve the dye that is not a solvent for the Wax, and a second solvent mower that will dissolve both the dye and the Wax. '3. A new composition of matter composed of dye in quantity suflicient to dye leather 20 and wax, a solvent that will dissolve both the dye and the wax, and a second solvent Signed at Chicago, 111., this 30th day of September, 1924:.

WOLF KRI'ICHEVSKY. HAROLD o. PRUTSMlAN. MABEL s. sMr'rH. 

